For me, it's nice to change it up every once in a while. It's not that I don't think they're good, it's merely to have a fresh perspective of the action. The same recycled lines year after year are a complete bore and this part of the game is in need of a makeover. Is anyone really that enthralled by the boring monotoned Eric Karros? I cringe anytime he chimes in and drones on and on, it's Campbell-worthy. Steve Lyons has a little conviction behind his lines and Matty V.'s dry humor is great, and I love him as the play-by-play, but I would like to see some more enthusiasm in key moments. Genuine excitement (which is probably very hard to capture when not in the moment, I'll admit) is needed overall.
That said, I'm down with revamping lines and stitching them into more of a conversation, but I think even then you'd have to record said lines, when it might be easier to start anew with a fresh team and have them come into it like that, rather than trying top pigeon-hole a few lines here and there into combine them into a pseudo-conversation.
In the end, I can always mute them now that we have SOTS back